Malicious PDF — malware analysis report

Static analysis result for SHA-256 f794e215bf2a9012…

MALICIOUS

PDF

26.8 KB Created: 2020-01-02 06:04:05 +00:00 Authoring application: mPDF 5.7
MD5: cb8731a0922b36d12f53eaebae143d64 SHA-1: baf843beb09d0a11b0efd64b519e3f97f5de94b5 SHA-256: f794e215bf2a9012444bbdb1b27996b1dd5bb22d50e255ef1b2bf556f44a8066
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. While the specific intent is unclear due to the lack of readable document body text and scripts, the PDF_SEO_LINK_FARM heuristic indicates a high volume of links, suggesting a deceptive or manipulative purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9742

Heuristics 2

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://cefasfese.4pu.com/4736732733730734/Brahma-by-Ralph-Waldo-Emerson.pdf
    • http://cefasfese.4pu.com/7737734731737738/Representative-Men-Seven-Lectures-by-Ralph-Waldo-Emerson.pdf
    • http://cefasfese.4pu.com/8732734735738/Essays-amp-Poems-by-Ralph-Waldo-Emerson.pdf
    • http://cefasfese.4pu.com/4736732731733735/Concord-Hymn-by-Ralph-Waldo-Emerson.pdf
    • http://cefasfese.4pu.com/1730736731732730739/Spanne-deinen-Wagen-an-die-Sterne-by-Ralph-Waldo-Emerson.pdf
    • http://cefasfese.4pu.com/3738739735733/Essays-and-Lectures-Nature-Addresses-and-Lectures-Essays-First-and-Second-Series-Representative-Men-English-Traits-The-Conduct-of-Life-by-Ralph-Waldo-Emerson.pdf
    • http://cefasfese.4pu.com/2732738734734734/The-Inaugural-Address-2009-Together-with-Abraham-Lincoln-s-First-and-Second-Inaugural-Addresses-and-The-Gettysburg-Address-and-Ralph-Waldo-Emerson-s-Self-Reliance-by-Barack-Obama.pdf
    • http://cefasfese.4pu.com/1730730730733737734/GG-Grundgesetz-Smarte-Gesetze-Markierte-Gesetze-Hervorhebung-von-wichtigen-Textstellen-f-r-Studium-Ausbildung-und-Beruf-by-Smarte-Gesetze.pdf
    • http://cefasfese.4pu.com/1730730730733731730/HGB-2016-Handelsgesetzbuch-Smarte-Gesetze-Markierte-Gesetze-5-Aufl-2016-Hervorhebung-der-wichtigen-Textstellen-f-r-Studium-Ausbildung-und-Beruf-by-Smarte-Gesetze.pdf
    • http://cefasfese.4pu.com/1730736737735738735/Revidierte-Sammlung-Der-Gesetze-Und-Dekrete-Des-Grossen-Und-Kleinen-Rathes-Der-Stadt-Und-Republik-Bern-Vom-10-Juny-1803-Bis-21-Sept-1815-In-Welcher-Die-Durch-Veranderte-Umstande-Oder-Spatere-Verordnungen-Aufgehobenen-Gesetze-Und-Dekrete-by-Anonymous.pdf
    • http://cefasfese.4pu.com/5734739738735733/Myra-Waldo-s-Travel-And-Motoring-Guide-To-Europe-by-Myra-Waldo.pdf
    • http://cefasfese.4pu.com/5739738736738739/-ber-Das-Geistige-In-Der-Kunst-by-Wassily-Kandinsky.pdf
    • http://cefasfese.4pu.com/4739736735736/The-Ralph-Mouse-Collection-Ralph-1-3-by-Beverly-Cleary.pdf
    • http://cefasfese.4pu.com/1730730730730735734/Die-Gesetze-der-Schwerkraft-by-Liz-Rosenberg.pdf
    • http://cefasfese.4pu.com/1731732737731730736/The-Unfinished-Revolution-The-Civil-Rights-Movement-from-1955-to-1965-by-Ralph-Bartling-Peter-Ralph-Bartling.pdf
    • http://cefasfese.4pu.com/1731732737731730737/The-Unfinished-Revolution-The-Civil-Rights-Movement-from-1955-to-1965-by-Ralph-Bartling-Peter-Ralph-Bartling.pdf
    • http://cefasfese.4pu.com/1731734739734735731/Die-Spielregeln-des-Lebens-12-Gesetze-die-unser-Schicksal-lenken-by-Friedrich-Scholz.pdf
    • http://cefasfese.4pu.com/1730732736730739735/Die-Gemeindegesetzgebung-in-Elsa--Lothringen-Zusammenstellung-Der-Betreffenden-Gesetze-Verordnungen-Ministerialverf-gungen-U-S-W-by-Reichlin.pdf
    • http://cefasfese.4pu.com/5730731731737730/Prairie-by-Anna-Lee-Waldo.pdf
    • http://cefasfese.4pu.com/8730735738735738/Waldo-by-Nathaly-Hewawasam.pdf
    • http://cefasfese.4pu.com/2732738734734734/Th